Single Valve High-pressure Chemical Churning Pile
bellows-operated pilot valve
change-over pilot valve
Pilot Valve
引示阀
液控单向阀
导引阀
试验井
导向阀
先导阀
导阀
指挥器
挤压点
导瓣
导井
前向导阀
sequenced pilot valve system
automatic stop and check valve
ball check valve
球止回阀
球核对阀
落球式止回阀
球形单向阀
球形止回阀
逆止球阀
止回球阀
球黏土
可塑火黏土